Cooler for internal-combustion engines.



C. L. VAN SGHGIGK. COOLER EOEINTERNAL GOMBUSTION ENGINES.

mmm-,61119521 1911. V

APPLICATION FILED APR,24, 1909.

y .my D @a Ammfys WTNESSES UNITED sTATEs PATENT.4 oEEioE,

CHARLES LAEUREN VAN soHOIoK, OE MILWAUKEE, OREGON, AssIGNoR OEONE-'ritratti i To HAROLD E. SPENCER AND ONE-THIRD To MANLIUs E.SPENCER, oF PORTLAND,

OREGON. y

COOLER `FOR INTERNAL-COMBSTION ENGINES..

To all whom it may concern:

Be it known vthat I, CHARLES L. VAN SCHOIOK, a citizen of the UnitedStates, and a resident of Milwaukee, in the'county of Clackamas andState of Oregon, have invented a new and Improved Cooler -torInternal-Combustion Engines, of which the following is a full, clear,and exact d-escription.

This invention relates to certain improvements in cooling means forinternal combustion engines, and-more particularly to an improved tankadapted to be connected .to the jacket of van internal combustion enljacket-Or shell, which-is itself formed offtwo gine and Voperatingautomatically to withdraw the heated )vater from the jacket, lcool it,and return the water to the jacket.

The object of my invention is to so construct the tank that therewill bean automatic circulation of the air over the walls of the tank to coolthe water,:an`d.so position the tank-that the cooling of the water willbring about the automatic lcirrulation of the latter.

Myv improved tank isin the form of a concentric walls between which thewater is held, the inner wall encircling a' large central passage openat the top and bottom and through which air may circulate.

Reference is.-to be had to the accompanying drawings, forming a part of'this specilication, in which similar characters of relerence-indicatecorresponding parts in all the figures, and in which- Figure l.is avertical section through a tank constructed in accordance with myinvention and operatively connected to the jacket of an engine; Fig. 2is atransve'rse section through `the tank Fig. '3 is -a top plan Viewofa simplilied form of tank in which the walls are smooth rather thanbeing corrugated; and-Fig. 4lis a horizontal section through a tank inwhich the central open space is subdivided by partitions through whichthe water may circulate.

The specific form of tank illustrated in Figs. 1 and 2' is formed of twoconcentric walls 10 and 1,1, spaced apart to leave a comparatively thinannular water jacket 12 therebetween. The two wallsare connectedtogether at their lower ends by an annular bottom wall 13, and may, ifdesired, be connected together at their upper ends. 4Preferably, thereis no top or cover to the tank,

specification@ Leners Patent. Patented Feb.,- 21, 1911. Applicationfiled April 2, Serial No. 491,947.

seeth-at the waterkin the annular chamber' maj/.evaporate to aid in thecooling effect. The tank is supported Aby suitable legs 111,constituting a standard, so thatthe'bottom o'l the tank is at 'aconsiderableA distance above the floor or support for the engine.-

The passage or chamber 15l encircled by the engine, and a hose 19 leadsfrom the upper end of this branch to the open top of the tank above thewater level in the latter. It 4often happens that the water in thejacketbecomes heated to the boiling point, so that i' pass out from lthejacket along steam will. with the water. The escape of this steamthrough 'the conduit 17 into the water would tend to render the liowintermittent were it not-for the branch 18. lThe steam or air bubblesescape up this branch, while the water flows along the'conduitlfuninterruptedly. Any water which may be carried up the branch by thesteam will be returned -to the tank through the hose 19.

The inner and outer walls of the tank may be corrugated soithat thesurface area of the tank will be greatly increased in proportion to thevolume of the tank. more, the corrugations present sharp angles fromwhich thc heat may be more readily dissipated. In Fig. 3 l` haveillustrated a somewhat simpler form in which the Walls 10aan l 11a aresmooth and devoid of corrugations. y The tank Vneed not necessarily becylindri'cal in cross section, as it is evident that v substantially thesame results might be obtained by forming the tank rectangular inFurther- V cross section, as indicated in Fig.. 4.-. In this luen-.tubes or .conduits form partitionsacross th''tank, andthe lower`end of'each of the The hot water.' coming 'from the engine jaelgeris'delivered through the. conduit 17a) theupper,portion of the jacket, andthe air within the passage .15 and in' contact with the outer surface ofthe tank is heated by radiation fromthis hotwater. The heating ot'theair causes it' to` rise and draw in fresh .cool .airatthe lowerportion of" the passage. l and draw fresh cool air intocontact Withthe-lower portion of the outer surface of the g tank. -The heat of theWater thus creates an automatic air circulation, and as the waterbecomes cooler it descends to the lower portion of the tank and risesthrough the conduit 16 to displace the hot water in the engine'cylinder. The water automatically circulates. due to thediife'renceintemperature of the tankandthe engine cylinder,-

and the air automatically circulates due to th'e differenceintemperatureof the Water at the upper and lower ends-ofthe tank.

- No fanor other suction deviceneed be em ployed for creating any forceddraft of the air and no pump need be employed for circulating the water;'The entire system Voperates automatically tain the engine .cylinder atvthe proper temperature.

Having thus described' my invention, Iy claim as'new and' desire tosecure by Letv ters Patent: y

l v -1. A cooler for -water-jacketed internal combustionengines havingtwo concentric vertically-disposed -Walls spaced -apart to andefficiently to mainv lower ends, means for supporting said cooler atanelevation .to permit the free admission of air to the lower. end ofthecentral air passage, means for deliverin"yvater from the lower v portionof the cooler to the water jacket of an' engine, and a conduitfordelivering waterV from, said jacket to the upper said conduit havinga portion of the' cooler, y branch leading from the upper side thereofupper and and delivering to said waterchamber and serving for the escapeof steam from the en'- ginc jacket and said conduit, saidwater chamberhaving the top thereofl open to facilitate the evaporation of thewater.

2. A cooler.y for water-jacketedinternal -combustion engines, includinwater chamber, means for-de ivering water from the llower portion of/thechamber to the water Jacket of an enginef'afcoiiduit .ftr deliveringwater from` the upper portion o cooler butvbelow the normal water leveltheren, `and a branch conduit leading* from the upper side of saidconduit and 'delivering to the water c'heunbery above/.the normal waterlevel in the latter, the escape of steam` from the. jacket and conduit.

In testimony whereof I have 'signed my name to'this specification in thetwo subscribing witnesses.

CHARLESy LABUREN VAN SCHOICK.` .v

J T. WnLLaoE.

an open top and ser/ving .for

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